Treetop living is elevated to haute new heights

Cedar Spire (Fife, Scotland)

Cedar Spire (Fife, Scotland)

A fairy-tale castle sits on the grounds of a grand Scottish estate. Its majestic details include: stained-glass windows, conical roofs and a balcony that's perfect for playing Rapunzel. A construction this whimsical keeps the kids occupied, so the adults are free to host parties on the neighboring deck.

Nut House (Dusseldorf, Germany)

Nut House (Dusseldorf, Germany)

Deep inside a walnut forest, we found this charming modern tree house that's shaped like the nut itself. Stilts support most of the weight, while the terrace is strapped to a nearby tree. Because of the height and large windows, we imagine that once we're inside, it'll feel like there's nothing but air between the leaves and us. It's used as a playroom for the owner's three children, and as an occasional guest room.